a(n) is the least number with exactly n divisors of the form 5*k+4.

Terms

a(0) =1a(1) =4a(2) =24a(3) =72a(4) =144a(5) =432a(6) =504a(7) =1008a(8) =1512a(9) =3528a(10) =3024a(11) =7056a(12) =5544a(13) =14112a(14) =11088a(15) =13104a(16) =16632a(17) =26208a(18) =36288a(19) =63504a(20) =33264a(21) =68544a(22) =77616a(23) =127008a(24) =66528a(25) =154224a(26) =155232a(27) =209664a(28) =133056a(29) =222768